CN114352763A - Top-mounted cryogenic ball valve and online assembly device and assembly process thereof - Google Patents
Top-mounted cryogenic ball valve and online assembly device and assembly process thereof Download PDFInfo
- Publication number
- CN114352763A CN114352763A CN202210031789.1A CN202210031789A CN114352763A CN 114352763 A CN114352763 A CN 114352763A CN 202210031789 A CN202210031789 A CN 202210031789A CN 114352763 A CN114352763 A CN 114352763A
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- Prior art keywords
- valve
- seat
- spring seat
- spring
- ball
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention relates to a top-mounted cryogenic ball valve and an online assembly device and an assembly process thereof, which are characterized in that: the assembling device adopts a hydraulic piston device, utilizes hydraulic pressure to push the valve seat to move axially and tightly cooperate with the ball body, avoids collision and scratch to the ball body when a metal tool is adopted for operation, and has the advantages of convenient operation, no damage to the sealing surface of the ball body, good sealing performance, convenient assembling operation process and the like.
Description
Technical Field
The invention relates to an installation tool and an assembly process of an upper-mounted ball valve.
Background
The present invention is a prior application having a prior application date of 2021, 12/27 and a prior application number of 202123325935.1.
The valve used in the LNG pipeline system generally adopts an upper-mounted type cryogenic ball valve, and a ball body and a valve seat are mounted from a middle cavity of the valve body. The installation method is that the valve seat is firstly installed in the valve body channel, the valve seat is retracted into the valve body channel by rotating the valve seat push ring in threaded connection with the valve seat, and the valve seat is moved out of the valve body channel and is in compression fit with the ball by reversely rotating the valve seat push ring after the ball is installed. In addition, like the top-loading ball valve with application number of CN202110223045.5 and the assembling tool and process thereof, the snap ring of the assembling and disassembling tool is clamped at the bulge of the spring seat at the outer side of the valve seat, and the valve seat is pushed into or pulled out of the valve body channel by rotating the thread push-pull sleeve, so that the assembling and disassembling of the ball body and the valve seat are realized. The main defects are that the rotary thread push-pull sleeve needs to be operated by a spanner, and the surface of a ball body is easy to collide and scratch in the operation process, so that the sealing surface of the ball body is damaged, and the sealing performance is influenced; moreover, the threaded push-pull sleeve rotated in the inner cavity of the valve body by adopting a wrench is easily blocked by the valve body and the ball body, so that the operation is very inconvenient.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an on-line installation tool of a cryogenic ball valve and an assembly process thereof, wherein the valve seat is convenient to move and operate, an operation tool does not rub and collide with a ball body in the disassembly and assembly process, and the friction and damage of a sealing surface of the ball body are avoided.
The purpose of the invention is realized by the following technical scheme:
a top-mounted cryogenic ball valve and an online assembly device thereof comprise a valve body, a ball body and a valve seat, wherein the valve body adopts an integrated top-mounted structure, the outer circular surface of the valve seat is provided with a spring seat, a clamping groove formed on the outer circular surface of the spring seat is matched with a clamp spring to be integrally installed in a valve body channel, the inner end of the spring seat is provided with an annular convex shoulder, and the annular convex shoulder is matched with the clamping groove of the assembly device; the method is characterized in that: the assembling device adopts a hydraulic piston device and comprises a cylinder body, a piston rod and a clamping plate, a rodless cavity of the cylinder body is provided with a hydraulic joint, a rod cavity is provided with a spring, the clamping plate is fixedly connected with the end part of one side of the rod cavity of the cylinder body, and the clamping plate is provided with a clamping groove which is matched with the annular convex shoulder of the spring seat.
Preferably, the clamping plate is fixedly connected with the cylinder body through threads, the end face of the rod cavity of the cylinder body is provided with a circular ring in clearance fit with the piston rod, the circular ring is provided with external threads, and the clamping plate is provided with screw holes in fit with the external threads of the circular ring.
Preferably, the clamping groove of the clamping plate is an 1/4 arc groove which has the same arc with the annular convex shoulder of the spring seat.
Preferably, the clamping plate and the cylinder body are connected by embedding a bayonet and a buckle.
An online assembly process of an upper-mounted type cryogenic ball valve is characterized in that:
a. assembling the valve seat and the spring seat: installing a spring seat on the outer circular surface of the valve seat, and sleeving a clamp spring on the outer circular surface of the spring seat; b. valve seat installation: the valve seat and the spring seat are integrally arranged in the valve body from the middle cavity of the valve body and retracted into the valve body channel; c. installation of a ball body: the ball is loaded into the valve cavity from the valve body middle cavity and rotates to the position of closing the sealing surface of the valve seat; d. the hydraulic piston device is arranged in the cavities at the two sides of the valve body, and the clamping groove of the clamping plate is clamped on the annular convex shoulder of the spring seat; e. the hydraulic joint is communicated with a hydraulic pump to input pressure to a rodless cavity of the cylinder body until the valve seat and the ball body are tightly pressed, and the clamp spring is embedded into an annular clamp groove in the outer circular surface of the spring seat; f. closing the hydraulic pump and taking out the hydraulic piston device; g. and installing a sealing device of the middle cavity of the valve body and driving.
Compared with the prior art, the invention has the beneficial effects that: the assembling device adopts a hydraulic piston device, utilizes hydraulic pressure to push the valve seat to move axially and tightly cooperate with the ball body, avoids collision and scratch to the ball body when a metal tool is adopted for operation, and has the advantages of convenient operation, no damage to the sealing surface of the ball body, good sealing performance and the like.
Drawings
FIG. 1 is a schematic structural diagram of a top-loading cryogenic ball valve and an on-line assembly device thereof.
In the figure: 1 spheroid, 2 valve bodies, 3 cylinder covers, 4 pistons, 5 springs, 6 cylinder bodies, 7 cardboard, 8 piston rods, 9 spring seats, 10 disk seats, 11 jump rings, 12 annular convex shoulders.
Detailed Description
The upper-mounted cryogenic ball valve and the online assembly device thereof as shown in fig. 1 comprise a valve body 2, a ball body 1 and a valve seat 10, wherein the valve body 2 adopts an integrated upper-mounted structure, namely a middle cavity is provided with an installation port, the ball body 1 and the valve seat 10 are installed in the valve cavity from the installation port, the outer circular surface of the valve seat 10 is provided with a spring seat 9, an annular clamping groove arranged on the outer circular surface of the spring seat 9 is matched with a clamping spring 11 to be integrally installed in a channel of the valve body 2, the inner end of the spring seat 9 is provided with an annular convex shoulder 12, the annular convex shoulder 12 is matched with a clamping groove of the assembly device, the inner end of the spring seat 9 is close to one end of the ball body 1, and a disc spring is installed between radial steps of the valve seat 10 and the spring seat 9 to form a floating type valve seat structure; the method is characterized in that: the assembling device adopts a hydraulic piston device and consists of a cylinder body 6, a cylinder cover 3, a piston 4, a piston rod 8 and a clamping plate 7, the cylinder cover 3 and the cylinder body 6 are hermetically installed to form a rodless cavity, a hydraulic joint for communicating the rodless cavity with a hydraulic pump is arranged on the cylinder cover 3, hydraulic pressure is input into the rodless cavity to push the piston 4 and the piston rod 8 to move relative to the cylinder body 6, a spring 5 is arranged in the rod cavity to push the piston 4 and the piston rod 8 to reset after the rodless cavity is relieved, the clamping plate 7 is fixedly connected with one end part of the rod cavity of the cylinder body 6, the clamping plate 7 is provided with a clamping groove which is matched with an annular convex shoulder 12 of a spring seat 9, when the valve seat 10 is installed, the clamping groove of the clamping plate 7 is embedded into the annular convex shoulder 12, the rodless cavity inputs hydraulic pressure to push the piston 4 and the piston rod 8 to move the cylinder body 6 and the clamping plate 7 towards the sphere 1 direction, the valve seat 10 is driven to move towards the sphere 1 direction and tightly press the sphere 1 to embed the clamping spring 11 into the annular convex groove on the spring seat 9, and then the hydraulic piston device is taken out after the hydraulic pressure is removed.
The technical effect that this technical scheme produced is, utilizes hydraulic pressure to remove disk seat 10, has avoided prior art to adopt the problem that metal tool operation was blockked by valve body 2 and spheroid 1 easily scratches the problem. The hydraulic piston device is suitable for assembling a single valve seat and a double-valve seat ball valve, and when the double-valve seat ball valve is assembled, the hydraulic piston device is installed on the annular convex shoulders of the two valve seats, and hydraulic pressure is input to the two hydraulic piston devices simultaneously.
The clamping groove of the clamping plate 7 is an 1/4 arc groove with the same arc as the annular shoulder 12 of the spring seat 9.
The technical characteristics have the technical effects that on the premise that the clamping plate 7 and the annular shoulder 12 are conveniently embedded, the annular contact area between the clamping plate 7 and the annular shoulder 12 is increased, and the movement stability of the valve seat 10 is improved.
The clamping plate 7 and the cylinder body 6 are fixedly connected with each other through threads, the end face of a rod cavity of the cylinder body 6 is provided with a circular ring in clearance fit with the piston rod 8, the circular ring is provided with external threads, and the clamping plate 7 is provided with screw holes matched with the external threads of the circular ring. The circular ring is concentric with the cylinder body 6, and the circular ring is integrally formed by extending the outer end face of the cylinder body 6.
The technical effect that this technical characteristic produced is, can be to the ball valve of different bores, change the cardboard 7 of different draw-in groove radians, cardboard 7 is changed simple to operate, has improved hydraulic piston device's commonality.
Adopt bayonet socket and buckle to inlay each other between cardboard 7 and the cylinder body 6 and adorn the connection, be equipped with the bayonet socket on the 7 terminal surfaces of cardboard, set up the buckle on the 6 terminal surfaces of cylinder body, insert the buckle on the cylinder body 6 in the bayonet socket on the cardboard 7, both relative rotations inlay the cardboard 7 on the cylinder body 6.
An online assembly process of an upper-mounted type cryogenic ball valve is characterized in that:
a. assembling the valve seat and the spring seat: the spring seat 9 is arranged on the outer circular surface of the valve seat 10, the annular clamping groove of the clamp spring 11 retreating from the spring seat 9 is sleeved on the outer circular surface, and a disc spring is arranged between the valve seat 10 and a radial step of the spring seat 9; b. valve seat installation: the valve seat 10 and the spring seat 9 are integrally installed in the middle cavity of the valve body 2 and retracted into the valve body channel; c. installation of a ball body: the ball 1 is loaded into the valve cavity from the cavity of the valve body 2 and rotates to the position of sealing surface closing with the valve seat 10; d. a hydraulic piston device is arranged between the inner cavity of the valve body 2 and the cavities at two sides of the sphere 1, and the clamping groove of the clamping plate 7 is clamped on the annular convex shoulder 12 of the spring seat 9; e. the hydraulic joint is communicated with a hydraulic pump to input pressure to a rodless cavity of the cylinder body 6 until the valve seat 10 is tightly pressed with the ball body 1, and the clamp spring 11 is embedded into an annular clamp groove in the outer circular surface of the spring seat 9; f. closing the hydraulic pump and taking out the hydraulic piston device; g. and installing a sealing device of the middle cavity of the valve body and a transmission device, such as a valve cover, sealing packing and an actuator.
The assembly process has the technical effects that the valve seat 10 is moved by hydraulic pressure, the operation is convenient, parts are not damaged in the operation process, and the matching performance of the parts and the product quality are improved.
Claims (5)
1. A top-mounted cryogenic ball valve and an online assembly device thereof comprise a valve body (2), a ball body (1) and a valve seat (10), wherein the valve body (2) adopts an integrated top-mounted structure, a spring seat (9) is arranged on the outer circular surface of the valve seat (10), an annular clamping groove formed on the outer circular surface of the spring seat (9) is matched with a clamp spring (11) to be integrally mounted in a channel of the valve body (2), an annular convex shoulder (12) is arranged at the inner end of the spring seat (9), and the annular convex shoulder (12) is matched with a clamping groove of the assembly device; the method is characterized in that: the assembling device adopts a hydraulic piston device and comprises a cylinder body (6), a cylinder cover (3), a piston (4), a piston rod (8) and a clamping plate (7), a rodless cavity is formed by the cylinder cover (3) and the cylinder body (6) in a sealing installation mode, a hydraulic joint communicated with the rodless cavity and a hydraulic pump is arranged on the cylinder cover (3), a spring (5) is arranged in the rod cavity, the clamping plate (7) is fixedly connected with the outer end part of one side of the rod cavity with the cylinder body (6), and the clamping plate (7) is provided with a clamping groove which is matched with an annular convex shoulder (12) of a spring seat (9) mutually.
2. The upper mount type cryogenic ball valve and the online assembling device thereof according to claim 1, wherein: the clamping groove of the clamping plate (7) is an 1/4 arc groove with the same radian as the annular convex shoulder (12) of the spring seat (9).
3. The upper mount type cryogenic ball valve and the online assembling device thereof according to claim 1 or 2, wherein: the clamping plate (7) and the cylinder body (6) are fixedly connected with each other through threads, the outer end face of the rod cavity of the cylinder body (6) is provided with a circular ring in clearance fit with the piston rod (8), the circular ring is provided with external threads, and the clamping plate (7) is provided with screw holes in mutual fit with the external threads of the circular ring.
4. The upper mount type cryogenic ball valve and the online assembling device thereof according to claim 1 or 2, wherein: the clamping plate (7) and the cylinder body (6) are connected by adopting a bayonet and a buckle in an embedded manner.
5. An online assembly process of an upper-mounted type cryogenic ball valve is characterized in that:
a. assembling the valve seat and the spring seat: a spring seat (9) is arranged on the outer circular surface of a valve seat (10), and an annular clamping groove for enabling a clamping spring (11) to withdraw from the spring seat (9) is sleeved on the outer circular surface;
b. valve seat installation: the valve seat (10) and the spring seat (9) are integrally installed in the valve body channel from the middle cavity of the valve body (2) and retracted into the valve body channel;
c. installation of a ball body: the ball body (1) is loaded into the valve cavity from the middle cavity of the valve body (2) and rotates to the position of closing the sealing surface of the valve seat (10);
d. a hydraulic piston device is arranged between the inner cavity of the valve body (2) and the cavities at two sides of the ball body (1), and a clamping groove of the clamping plate (7) is clamped on an annular convex shoulder (12) of the spring seat (9);
e. the hydraulic joint is communicated with a hydraulic pump to input pressure to a rodless cavity of the cylinder body (6), and after the valve seat (10) and the ball body (1) are tightly pressed, the clamp spring (11) is embedded into an annular clamp groove in the outer circular surface of the spring seat (9);
f. closing the hydraulic pump and taking out the hydraulic piston device;
g. and installing a sealing device of the middle cavity of the valve body and a transmission device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021233259351 | 2021-12-27 | ||
| CN202123325935 | 2021-12-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114352763A true CN114352763A (en) | 2022-04-15 |
| CN114352763B CN114352763B (en) | 2023-06-16 |
Family
ID=81109688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210031789.1A Active CN114352763B (en) | 2021-12-27 | 2022-01-12 | Top-mounted cryogenic ball valve, on-line assembly device and assembly process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114352763B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777624A (en) * | 2012-08-17 | 2012-11-14 | 慎江阀门有限公司 | Mounted online maintenance ball valve |
| CN203627882U (en) * | 2013-12-18 | 2014-06-04 | 雷蒙德（北京）阀门制造有限公司 | Up-mounted type ball valve with valve seat capable of being quickly dismounted and maintained online |
| CN203836266U (en) * | 2014-05-04 | 2014-09-17 | 环球阀门集团有限公司 | Upper-mounted self-sealing ball valve |
| CN204153211U (en) * | 2014-11-02 | 2015-02-11 | 上海纳福希阀门有限公司 | A kind of hydraulic pressure bracing type upper-mounting type ball valve |
| CN204226714U (en) * | 2014-11-02 | 2015-03-25 | 上海纳福希阀门有限公司 | A kind of hydraulic top opening type upper-mounting type ball valve |
| CN204226720U (en) * | 2014-11-02 | 2015-03-25 | 上海纳福希阀门有限公司 | A kind of ball seat and apply the upper-mounting type ball valve of this ball seat |
| CN104565424A (en) * | 2013-10-25 | 2015-04-29 | 大丰超威机械有限公司 | Top assembling type fixed ball valve capable of pushing valve seats open by utilizing air pressure |
| KR102100705B1 (en) * | 2018-10-15 | 2020-04-14 | 화성밸브 주식회사 | Top entry ball valve |
| CN113007379A (en) * | 2021-03-01 | 2021-06-22 | 浙江伯特利科技股份有限公司 | Top-mounted ball valve and assembling tool and process thereof |
| CN113202944A (en) * | 2021-05-14 | 2021-08-03 | 大通互惠集团有限公司 | Cryogenic single-valve-seat forced sealing valve convenient for online maintenance |
-
2022
- 2022-01-12 CN CN202210031789.1A patent/CN114352763B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777624A (en) * | 2012-08-17 | 2012-11-14 | 慎江阀门有限公司 | Mounted online maintenance ball valve |
| CN104565424A (en) * | 2013-10-25 | 2015-04-29 | 大丰超威机械有限公司 | Top assembling type fixed ball valve capable of pushing valve seats open by utilizing air pressure |
| CN203627882U (en) * | 2013-12-18 | 2014-06-04 | 雷蒙德（北京）阀门制造有限公司 | Up-mounted type ball valve with valve seat capable of being quickly dismounted and maintained online |
| CN203836266U (en) * | 2014-05-04 | 2014-09-17 | 环球阀门集团有限公司 | Upper-mounted self-sealing ball valve |
| CN204153211U (en) * | 2014-11-02 | 2015-02-11 | 上海纳福希阀门有限公司 | A kind of hydraulic pressure bracing type upper-mounting type ball valve |
| CN204226714U (en) * | 2014-11-02 | 2015-03-25 | 上海纳福希阀门有限公司 | A kind of hydraulic top opening type upper-mounting type ball valve |
| CN204226720U (en) * | 2014-11-02 | 2015-03-25 | 上海纳福希阀门有限公司 | A kind of ball seat and apply the upper-mounting type ball valve of this ball seat |
| KR102100705B1 (en) * | 2018-10-15 | 2020-04-14 | 화성밸브 주식회사 | Top entry ball valve |
| CN113007379A (en) * | 2021-03-01 | 2021-06-22 | 浙江伯特利科技股份有限公司 | Top-mounted ball valve and assembling tool and process thereof |
| CN113202944A (en) * | 2021-05-14 | 2021-08-03 | 大通互惠集团有限公司 | Cryogenic single-valve-seat forced sealing valve convenient for online maintenance |
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| Publication number | Publication date |
|---|---|
| CN114352763B (en) | 2023-06-16 |
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